A single substitution mutation has altered a codon from an “AGU” to an “AGC”. What effect...

A single substitution mutation has altered a codon from an “AGU” to an “AGC”. What effect will this have on the protein?

1. This would be a missense mutation and NOT affect the function of the protein

2. This would be a nonsense mutation and affect the function of the protein

3. This would be a missense mutation and affect the function of the protein

4. This would be a silent mutation and NOT affect the function of the protein

5. This would be a silent mutation and affect the function of the protein

choose the correct option and explain why.

Solutions

Expert Solution

Here, the correct option is 4. This would be a silent mutation and NOT affect the function of the protein

Explanation -

The translation is the process in which the polypeptide chain is synthesized with mRNA as a template. The tRNA and ribosomes assist this process. The mRNA consists of the nitrogenous base sequence which acts as the template. A codon is a three-base group in the mRNA which is used in the translation process. These codons are used as a recognition site for the anticodons to bind to them and the tRNA (where the anticodons are already located on the other side) release the one corresponding amino acid (located on that tRNA molecule) to the growing polypeptide chain. This process goes on and a polypeptide chain is produced.

The three-letter codons are the base sequence and the code for a particular amino acid. It may possible that two or more codons codes for a same amino acid because we have 64 possible codons and only 20 amino acids.

Now, here the original codon is AGU

mutated codon is AGC

Original codon AGU codes for amino acid serine.

While the mutated codon AGC also codes for serine.

This shows that both the original and mutated codon codes for the same amino acid and thus they will add similar amnio acid to the growing polypeptide chain and thus the mutated codon will not affect the final structure of the protein.

Please hit on the like button if you are satisfied with the answer. Give comments for further clarification/assistance. Thanks! Have a good day.

gladiator answered 1 year ago

Next > < Previous

Related Solutions

What is a codon? What is silent mutation?

QUESTION 1 A single base change mutation at the third position in a codon for a...

QUESTION 1 A single base change mutation at the third position in a codon for a protein encoding gene would most often cause a ______. ( ) Deletion mutation ( ) Insertion mutation ( ) Nonsense mutation ( ) Silent mutation ( ) Missense mutation 3 points [Save Answer] QUESTION 2 Which of the following correctly ranks a point mutations effect on a protein from most severe mutation to the least? ( ) Missense, silent, nonsense ( ) Silent, nonsense,...

1.A single nucleotide mutation in the third position of a codon more often than in the...

1.A single nucleotide mutation in the third position of a codon more often than in the second or first position a) has no effect on the amino acid sequence of the encoded protein. b) alters the reading frame of the mRNA. c) changes an amino acid in the encoded protein. d) introduces a stop codon into the mRNA. 2. The synthesis of new DNA requires the prior formation of RNA oligonucleotides to serve as primers. This latter observation is evidence...

Question 1. A strain of E. coli carries a substitution mutation causing the terminator codon 5’-UAG-3’...

Question 1. A strain of E. coli carries a substitution mutation causing the terminator codon 5’-UAG-3’ to occur at an interior position in a particular type of mRNA. This strain also carries a suppressor mutation that alters the anti-codon of a type of tRNA molecule so that it reads 3’-AUC-5’. This type of tRNA reads this terminator codon and inserts the amino acid tyrosine. a.What effect would the presence of both of these mutations together have on the polypeptide translated...

What is recombination? How does the effect of recombination differ from that of mutation or a...

What is recombination? How does the effect of recombination differ from that of mutation or a random change in the DNA sequence?

What type of mutation would occur from a single nucleotide deletion (point mutation) within the coding...

What type of mutation would occur from a single nucleotide deletion (point mutation) within the coding sequence of a protein-coding gene? a. a frameshift mutation b. a silent point mutation c. a nonsense point mutation d. a missense point mutation e. All of the choices are possible.

Question